20r+13=197-3r

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Solution for 20r+13=197-3r equation: 



20r+13=197-3r

We move all terms to the left:

20r+13-(197-3r)=0

We add all the numbers together, and all the variables

20r-(-3r+197)+13=0

We get rid of parentheses

20r+3r-197+13=0

We add all the numbers together, and all the variables

23r-184=0

We move all terms containing r to the left, all other terms to the right

23r=184

r=184/23

r=8

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